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Finding the Fourth Proportional to 103,434.80, 155,152.20 and 50,946.80

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Solution

The fourth proportional to 103,434.80, 155,152.20 and 50,946.80 is: 76,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,434.80 : 155,152.20 = 50,946.80 : x
  2. Step 2: Convert to fraction form
    103,434.80/155,152.20 = 50,946.80/x
  3. Step 3: Cross multiply
    103,434.80x = 155,152.20 × 50,946.80
  4. Step 4: Simplify right side
    103,434.80x = 7,904,508,102.96
  5. Step 5: Solve for x
    x = 7,904,508,102.96/103,434.80
  6. Step 6: Final answer
    x = 76,420.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.